why is the atmosphere densest near the sur
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At night, after the sun goes down, the atmosphere cools and the temperature drops. Another property is called pressure. Pressure is how thick or dense the air is. ... The atmosphere is the most dense near the surface because of gravity.
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The atmosphere is the most dense near the surface because of gravity. As one goes higher, the air gets thinner and thinner. At an altitude of about ten kilometers, the atmosphere is only half as thick as at the surface. That's why air tanks are needed to climb Mt.
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